linux-kernel - Re: [PATCH] tracing: prevent build warning: 'ftrace_graph

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Date:	Tue, 17 Nov 2009 15:46:31 +0800
From:	Lai Jiangshan <laijs@...fujitsu.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Frederic Weisbecker <fweisbec@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] tracing: prevent build warning: 'ftrace_graph_buf'	defined
 but not used

Frederic Weisbecker wrote:
> On Thu, Nov 05, 2009 at 11:16:17AM +0800, Lai Jiangshan wrote:
>> prevent build warning when !CONFIG_FUNCTION_GRAPH_TRACER
>>
>> Signed-off-by: Lai Jiangshan <laijs@...fujitsu.com>
> 
> 
> Acked-by: Frederic Weisbecker <fweisbec@...il.com>

Hi, Ingo,

Could you apply this cleanup patch for -tip?

Lai

> 
> 
> 
>> ---
>> diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
>> index 7cb6f19..892e3ea 100644
>> --- a/kernel/trace/ftrace.c
>> +++ b/kernel/trace/ftrace.c
>> @@ -2274,7 +2274,6 @@ void ftrace_set_notrace(unsigned char *buf, int len, int reset)
>>  #define FTRACE_FILTER_SIZE		COMMAND_LINE_SIZE
>>  static char ftrace_notrace_buf[FTRACE_FILTER_SIZE] __initdata;
>>  static char ftrace_filter_buf[FTRACE_FILTER_SIZE] __initdata;
>> -static char ftrace_graph_buf[FTRACE_FILTER_SIZE] __initdata;
>>  
>>  static int __init set_ftrace_notrace(char *str)
>>  {
>> @@ -2291,6 +2290,7 @@ static int __init set_ftrace_filter(char *str)
>>  __setup("ftrace_filter=", set_ftrace_filter);
>>  
>>  #ifdef CONFIG_FUNCTION_GRAPH_TRACER
>> +static char ftrace_graph_buf[FTRACE_FILTER_SIZE] __initdata;
>>  static int __init set_graph_function(char *str)
>>  {
>>  	strlcpy(ftrace_graph_buf, str, FTRACE_FILTER_SIZE);
>>
> 
> 
> 

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